[Elecraft] KXAT2 ATU MD Menu

[Wayne Burdick]

Pierre,

You can test the inductors and capacitors using these menu entries. Here’s a general approach:

1. Connect a dummy load to the antenna jack.

2. Set the KX2 for 40 meters, about 3 watts. 

3. With the ATU in BYP (bypass) mode, a TUNE should report SWR of 1.0.

4. Selecting ATU MD = L5, L6, L7 or C5, C6, C7 should make the SWR go up (larger the reactance, the greater the SWR change).

5. L1-L4 and C1-C4 can be tested in the same way, but you’ll need to use a higher band, such as 17 meters, to clearly see the impact of these smaller reactances.

6. I believe that the Ct test position also throws in a capacitor and possibly an inductor to see the effect of switching the network from C-in to C-out. This is likely to be observed best on a higher band.

73,
Wayne
N6KR

  


> On May 9, 2018, at 6:23 AM, VE2PID <ve2pid at videotron.ca> wrote:
> 
> Hi ... In the KXAT2 menu, there is an option to check relays:  In ATU MD Modes L1-L7, C1-C7 and Ct are used to test the KXAT2's relays and L-network. However, I dont see any detailed infos of how to use it and what results should be expected ??
> 
> Any information would be welcome.
> 
> Thanks de Pierre VE2PID
> 
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